001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.dao.shard.advice;
016    
017    import com.liferay.portal.kernel.cache.CacheRegistryUtil;
018    import com.liferay.portal.kernel.dao.shard.ShardUtil;
019    import com.liferay.portal.kernel.log.Log;
020    import com.liferay.portal.kernel.log.LogFactoryUtil;
021    
022    import org.aopalliance.intercept.MethodInterceptor;
023    import org.aopalliance.intercept.MethodInvocation;
024    
025    /**
026     * @author Michael Young
027     * @author Alexander Chow
028     * @author Shuyang Zhou
029     */
030    public class ShardIterativelyAdvice implements MethodInterceptor {
031    
032            /**
033             * Invoke a join point across all shards while using the company service
034             * stack.
035             *
036             * @see ShardGloballyAdvice
037             */
038            public Object invoke(MethodInvocation methodInvocation) throws Throwable {
039                    if (_log.isInfoEnabled()) {
040                            _log.info(
041                                    "Iterating through all shards for " +
042                                            methodInvocation.toString());
043                    }
044    
045                    for (String shardName : ShardUtil.getAvailableShardNames()) {
046                            _shardAdvice.pushCompanyService(shardName);
047    
048                            try {
049                                    methodInvocation.proceed();
050                            }
051                            finally {
052                                    _shardAdvice.popCompanyService();
053    
054                                    CacheRegistryUtil.clear();
055                            }
056                    }
057    
058                    return null;
059            }
060    
061            public void setShardAdvice(ShardAdvice shardAdvice) {
062                    _shardAdvice = shardAdvice;
063            }
064    
065            private static Log _log = LogFactoryUtil.getLog(
066                    ShardIterativelyAdvice.class);
067    
068            private ShardAdvice _shardAdvice;
069    
070    }